Here's a God of War: Ascension teaser trailer along with a few screenshots. Ascension is apparently a prequel "that will show Kratos' emotional path of redemption whilst detailing the rise of his rage to break free from Ares' bond".

"The bar is set quite high for this franchise as each God of War title succeeds in being better than the last," said Todd Papy, Game Director, God of War: Ascension, SCE WWS Santa Monica Studios. "But, unlike previous releases, we’re providing a deeper look into Kratos’ tormented past and psyche that fans have not seen before. Combined with refined gameplay, jaw-dropping visuals, and a fresh twist on competitive gaming with our new online multiplayer mode, I guarantee that God of War: Ascension will give fans what they have been eagerly waiting for, and much more."